Oren Eini is working for Hibernating Rhinos LTD, a Israeli based company producing developer productivity tools for OLTP applications such as NHibernate Profiler (nhprof.com), Linq to SQL Profiler(l2sprof.com), Entity Framework Profiler (efprof.com) and more.

Oren's main focus is on architecture and best practices that promote quality software and zero-friction development. Oren is the author of Rhino Mocks, one of the most popular mocking frameworks on the .NET platform, and is also a leading figure in other well known open source projects including the Castle project and NHibernate.

An internationally known presenter, Oren has spoken at conferences such as DevTeach, JAOO, Oredev, NDC and Progressive.NET and is the author of the book "DSLs in Boo: Domain Specific Languages in .NET", published by Manning. Oren, using his pseudonym as Ayende Rahien, is a frequent blogger at http://www.ayende.com/Blog/.

His hobbies include reading fantasy novels, reviewing code, and writing about himself in the third person. Oren is also a Microsoft MVP, a fact that he tends to forget when writing a bio.